From 2985a4683adabe1d36029181dcc97d7974133a06 Mon Sep 17 00:00:00 2001
From: Lauren Perry <lauren.perry@codethink.co.uk>
Date: Wed, 29 Apr 2015 15:54:43 +0000
Subject: morphlib: Add command to get build-log for a given chunk and system
 file

Change-Id: I09e9b17ef2e0fb94dbf5a96dca91062d64433add
---
 morphlib/plugins/show_build_log_plugin.py | 90 +++++++++++++++++++++++++++++++
 without-test-modules                      |  1 +
 2 files changed, 91 insertions(+)
 create mode 100644 morphlib/plugins/show_build_log_plugin.py

diff --git a/morphlib/plugins/show_build_log_plugin.py b/morphlib/plugins/show_build_log_plugin.py
new file mode 100644
index 00000000..2c80ff50
--- /dev/null
+++ b/morphlib/plugins/show_build_log_plugin.py
@@ -0,0 +1,90 @@
+# Copyright (C) 2015 Codethink Limited
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+import cliapp
+import os
+import urllib
+import urlparse
+
+import morphlib
+
+
+class ShowBuildLog(cliapp.Plugin):
+
+    def enable(self):
+        self.app.add_subcommand('show-build-log', self.show_build_log,
+                                arg_synopsis='SYSTEM CHUNK')
+
+    def disable(self):
+        pass
+
+    def show_build_log(self, args):
+        '''Display build logs for a given component in a system.
+
+        Command line arguments:
+
+        * `SYSTEM` is the name of the system we want log data from.
+        * `CHUNK` is the name of the chunk we want log data for.
+
+        Example:
+
+            morph show-build-log devel-system-x86_64-generic.morph pip
+
+        '''
+
+        if len(args) != 2:
+            raise cliapp.AppException('show-build-log expects system filename '
+                                      'and chunk as input.')
+
+        artifact_cache_server = (
+            self.app.settings['artifact-cache-server'] or
+            self.app.settings['cache-server'])
+
+        system = args[0]
+        chunk = args[1]
+
+        sb = morphlib.sysbranchdir.open_from_within('.')
+        root_repo_url = sb.get_config('branch.root')
+        ref = sb.get_config('branch.name')
+
+        definitions_repo_path = sb.get_git_directory_name(root_repo_url)
+
+        build_command = morphlib.buildcommand.BuildCommand(self.app, None)
+        srcpool = build_command.create_source_pool(definitions_repo_path, ref,
+                                                   system)
+        root = build_command.resolve_artifacts(srcpool)
+
+        arch = root.source.morphology['arch']
+        build_env = build_command.new_build_env(arch)
+
+        ckc = morphlib.cachekeycomputer.CacheKeyComputer(build_env)
+
+        cache_key = None
+        for source in set(a.source for a in root.walk()):
+            if source.name == chunk:
+                cache_key = ckc.compute_key(source)
+                break
+
+        if cache_key:
+            url = urlparse.urljoin(artifact_cache_server,
+                '/1.0/artifacts?filename=%s.build-log' % source.cache_key)
+            build_log = urllib.urlopen(url)
+            build_output = []
+            for line in build_log:
+                build_output.append(str(line))
+            self.app.output.write(''.join(build_output))
+        else:
+            raise cliapp.AppException('Component not found in the given '
+                                      'system.')
diff --git a/without-test-modules b/without-test-modules
index 689fb97f..189f1309 100644
--- a/without-test-modules
+++ b/without-test-modules
@@ -35,6 +35,7 @@ morphlib/plugins/distbuild_plugin.py
 morphlib/plugins/certify_plugin.py
 morphlib/plugins/get_repo_plugin.py
 morphlib/plugins/system_manifests_plugin.py
+morphlib/plugins/show_build_log_plugin.py
 distbuild/__init__.py
 distbuild/build_controller.py
 distbuild/connection_machine.py
-- 
cgit v1.2.1